Use and Care Manual
10 11
MoJack HDL Mower Lift || MoJack HDL Mower Lift
MAINTENANCE
Important: Use only a good grade hydraulic jack oil. Avoid mixing different types of fluid and NEVER use brake fluid, turbine
oil, transmission fluid, motor oil or glycerin. Improper fluid can cause premature failure of the jack and the potential for sudden
and immediate loss of load.
HOW TO REPLACE THE HYDRAULIC CYLINDER
1) To remove the cylinder, remove the bolts holding the cylinder in place.
2) Remove old cylinder and install new cyclinder using the same hardware.
ADDING OIL TO HYDRUALIC CYLINDER
1) With saddle fully lowered and pump piston fully depressed, set jack in its upright, level position. Remove oil filler plug.
2) Fill until oil is level with the filler plug hole, reinstall oil filler plug.
CHANGING OIL IN HYDRUALIC CYLINDER
For best performance and longest life, replace the complete fiuid supply at least once per year.
1) With saddle fully lowered and pump piston fully depressed, remove the oil filler plug.
2) Lay the jack on its side and drain the fluid into a suitable container.
NOTE: Dispose of hydraulic fiuid in accordance with local regulations.
3) Fill with good quality jack oil. Reinstall oil filler plug. We recommend Mobil DTE 13 or equivalent.
LUBRICATION
1) A coating of light lubricating oil to pivot points, axles and hinges will help to prevent rust and assure that wheels, casters and
pump assemblies move freely.
2) Periodically check the pump piston and ram for signs of rust or corrosion. Clean as needed and wipe with a clean,
oil soaked rag.
NOTE: Never use sandpaper or abrasive material on these surfaces.
STORAGE
When not in use, store the Bottle Jack with pump piston and ram fully retracted.
TROUBLESHOOTING
Symptom
Jack will not lift load
Jack bleeds off after lift
Jack will not lower after unloading
Poor lift performance
Will not lift to full extension
Possible Causes
• Release valve not tightly closed
• Overload condition
• Release valve not tightly closed
• Overload condition
• Hydraulic unit malfunction
• Reservoir overlled
• Linkages binding
• Fluid level low
• Air trapped in system
• Fluid level low
Corrective Action
• Ensure release valve is tightly closed
• Remedy overload condition
• Ensure release valve is tightly closed
• Remedy overload condition
• Contact MoJack Customer Service
• Drain uid to proper level
• Clean and lubricate moving parts
• Ensure proper uid level
• With ram fully retracted, remove oil ller
plug to let pressurized air escape, reinstall
oil filler plug
• Ensure proper uid level
Not for use with tires over 17” diameter (43cm) in size
SUPPORTED TIRE SIZES
Wheel Pads accommodate wheel sizes from
10” – 17”
(25cm – 43cm)